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Dirk Shadd / St. Petersburg Times

Pittsburgh Steelers linebacker James Harrison is tackled by Arizona Cardinals receivers Larry Fitzgerald, bottom, and Steve Breaston at the goal line after a 100-yard interception return for a touchdown to end the second quarter.

Pittsburgh Steelers linebacker James Harrison is tackled by Arizona Cardinals receivers Larry Fitzgerald, bottom, and Steve Breaston at the goal line after a 100-yard interception return for a touchdown to end the second quarter. (Dirk Shadd / St. Petersburg Times)

Pittsburgh Steelers linebacker James Harrison is tackled by Arizona Cardinals receivers Larry Fitzgerald, bottom, and Steve Breaston at the goal line after a 100-yard interception return for a touchdown to end the second quarter.